diff options
Diffstat (limited to 'net/mac80211/status.c')
| -rw-r--r-- | net/mac80211/status.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 9612d89fad56..71de2d3866cc 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -390,6 +390,46 @@ ieee80211_add_tx_radiotap_header(struct ieee80211_local *local, } } +/* + * Handles the tx for TDLS teardown frames. + * If the frame wasn't ACKed by the peer - it will be re-sent through the AP + */ +static void ieee80211_tdls_td_tx_handle(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb, u32 flags) +{ + struct sk_buff *teardown_skb; + struct sk_buff *orig_teardown_skb; + bool is_teardown = false; + + /* Get the teardown data we need and free the lock */ + spin_lock(&sdata->u.mgd.teardown_lock); + teardown_skb = sdata->u.mgd.teardown_skb; + orig_teardown_skb = sdata->u.mgd.orig_teardown_skb; + if ((skb == orig_teardown_skb) && teardown_skb) { + sdata->u.mgd.teardown_skb = NULL; + sdata->u.mgd.orig_teardown_skb = NULL; + is_teardown = true; + } + spin_unlock(&sdata->u.mgd.teardown_lock); + + if (is_teardown) { + /* This mechanism relies on being able to get ACKs */ + WARN_ON(!(local->hw.flags & + IEEE80211_HW_REPORTS_TX_ACK_STATUS)); + + /* Check if peer has ACKed */ + if (flags & IEEE80211_TX_STAT_ACK) { + dev_kfree_skb_any(teardown_skb); + } else { + tdls_dbg(sdata, + "TDLS Resending teardown through AP\n"); + + ieee80211_subif_start_xmit(teardown_skb, skb->dev); + } + } +} + static void ieee80211_report_used_skb(struct ieee80211_local *local, struct sk_buff *skb, bool dropped) { @@ -426,8 +466,19 @@ static void ieee80211_report_used_skb(struct ieee80211_local *local, if (!sdata) { skb->dev = NULL; } else if (info->flags & IEEE80211_TX_INTFL_MLME_CONN_TX) { - ieee80211_mgd_conn_tx_status(sdata, hdr->frame_control, - acked); + unsigned int hdr_size = + ieee80211_hdrlen(hdr->frame_control); + + /* Check to see if packet is a TDLS teardown packet */ + if (ieee80211_is_data(hdr->frame_control) && + (ieee80211_get_tdls_action(skb, hdr_size) == + WLAN_TDLS_TEARDOWN)) + ieee80211_tdls_td_tx_handle(local, sdata, skb, + info->flags); + else + ieee80211_mgd_conn_tx_status(sdata, + hdr->frame_control, + acked); } else if (ieee80211_is_nullfunc(hdr->frame_control) || ieee80211_is_qos_nullfunc(hdr->frame_control)) { cfg80211_probe_status(sdata->dev, hdr->addr1, |